BioShock Infinite
80 Achievements
1,695
42-52h
Fully Equipped
Purchased any two upgrades for Old Man Winter or Radar Range in Burial at Sea - Episode 1.
10
How to unlock the Fully Equipped achievement in BioShock Infinite - Definitive Guide
Save adam so you can use possession on the various vending machines, and look for lockpicks to unlock rooms that require them. They tend to store a lot of useful currency and items.
Winter Boost $125
Winter Mod $225
Radar Range upgrades are purchased at El Ammo Bandito vending machines.
Accelerator Mod $150
Slow Cook Mod $200
You can buy one of each and get it. So, the most you have to spend is $275.
There are four possible upgrades you can buy that will go toward the two you need for this trophy: The "Winter Boost" and "Winter Mod" for the Old Man Winter plasmid and the "Accelerator Mod" and "Slow Cook Mod" for the Radar Range gun. Purchasing all four is not required. You are also not required to max out either to earn this trophy, meaning you can purchase any 2 of the 4 and earn the trophy.
Upgrades for Old Man Winter are purchased at the Gene Banks. Gene Banks are mounted on walls and have an illustration of a muscle man on the front.
Upgrades for the Radar Range are purchased at the Ammo Banditos Machines. These are stand-alone vending machines with an illustration of a bandit on the front. Above the bandit are the words "El Ammo Bandito". This machine also talks (exclusively in Spanish) so you will probably hear it before you see it.
All are available at the first machines you come across and are purchasable even before you have the weapon/plasmid. The minimum amount required for this is $275.
You should try to get this out of the way early on as money can be pretty scarce in this DLC. If you want to save your money you can always save up enough to buy both, let the trophy pop then reload the checkpoint.